Nano-composite coating with low surface energy and preparation method thereof

A nano-composite coating and low surface energy technology, which is applied in the direction of surface coating liquid devices, coatings, pre-treated surfaces, etc., can solve the problem of poor flexibility and adhesion of coatings, difficult to apply to application places, coatings Hardness cannot be adjusted and other problems, to achieve the effect of good self-lubricating property, improved performance, and adjustable hardness

Inactive Publication Date: 2009-11-25
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are weak points in this coating, at first, although the hardness of coating is higher, more wear-resisting, have the also higher surface energy, cause its not sticky poor shortcoming; Secondly, the hardness of coating is not enough Adjustment, it is difficult to apply to different application places; thirdly, the flexibility and adhesion of the coating are poor, and it is easy to be damaged and peeled off in case of external force impact or strong vibration

Method used

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  • Nano-composite coating with low surface energy and preparation method thereof
  • Nano-composite coating with low surface energy and preparation method thereof

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Embodiment 1

[0017]The specific steps of preparation are as follows: step 1, cleaning and roughening the surface of the substrate, so that the roughness of the surface of the substrate is 2 μm. In step 2, the spheres, rods, flakes, slurries, solvents, and inorganic pigments are mixed according to a weight ratio of 10:1.8:1.2:0.4:30:1 to obtain a transition layer slurry, and then Coat the substrate more than once with the transition layer slurry; wherein, the spherical object is alumina in the oxide, and its spherical diameter is 1 nm, and the rod-shaped object is polycrystalline mullite fiber in the silicon-aluminum salt ceramic particle, and its rod diameter is 500nm, the ratio of rod length to rod diameter is 28, the flakes are spinels in silicon-aluminum salt ceramic particles, its thickness is 1000nm, the ratio of flake length or flake width to flake thickness is 22, and the slurrying agent is made of conventional viscose The solvent is ethanol in alcohol, the substrate is metal alumin...

Embodiment 2

[0019] The specific steps of preparation are as follows: step 1, cleaning and roughening the surface of the substrate, so that the roughness of the surface of the substrate is 4 μm. In step 2, the spheres, rods, flakes, slurries, solvents, and inorganic pigments are mixed in a weight ratio of 10:1.9:1.1:0.7:23:1.5 to obtain the transition layer slurry, and then Coat the substrate with the transition layer slurry more than once; wherein, the spherical object is alumina in the oxide, and its spherical diameter is 13nm, and the rod-shaped object is polycrystalline mullite fiber in silicon-aluminum salt ceramic particles, and its rod diameter is 800nm, the ratio of rod length to rod diameter is 29, the flakes are spinels in silicon-aluminum salt ceramic particles, its thickness is 880nm, the ratio of flake length or flake width to flake thickness is 21, and the slurry forming agent is made of conventional viscose The solvent is ethanol in alcohol, the substrate is metal aluminum i...

Embodiment 3

[0021] The specific steps of preparation are as follows: step 1, cleaning and roughening the surface of the substrate, so that the roughness of the surface of the substrate is 6 μm. Step 2, first mix the spheres, rods, flakes, slurries, solvents and inorganic pigments in a ratio of 10:2:1:1:17:2 by weight to obtain the transition layer slurry, and then Coat the substrate more than once with the transition layer slurry; wherein, the spherical object is alumina in the oxide, and its spherical diameter is 25nm, and the rod-shaped object is polycrystalline mullite fiber in silicon-aluminum salt ceramic particles, and its rod diameter is 1000nm, the ratio of rod length to rod diameter is 30, the flakes are spinels in silicon-aluminum salt ceramic particles, its thickness is 750nm, the ratio of flake length or flake width to flake thickness is 20, and the slurrying agent is made of conventional viscose The solvent is ethanol in alcohol, the substrate is metal aluminum in conductor, ...

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Abstract

The invention discloses a nano-composite coating with low surface energy and a preparation method thereof. The nano-composite coating consists of a transition layer and a surface layer, wherein the thickness of the transition layer is between 2 and 200 mu m, and the transition layer consists of more than one layer of mixture of bulbs, clubs and flakes; and the thickness of the surface layer is between 2 and 40 mu m, and the surface layer consists of a reticulated silica glassy substance. The method comprises the steps of: performing cleaning and roughing treatment on the surface of a substrate first, then mixing the bulbs, the clubs, the flakes, a slurry forming agent and a solvent to obtain slurry of the transition layer, using the slurry of the transition layer to coat the substrate, placing the coated substrate at a temperature of between 180 and 250 DEG C to obtain the transition layer, then mixing organosiloxane water solution and alcohol solution of ethyl orthosilicate to obtain hydrolytic polycondensation reaction solution first, then dripping acid into the hydrolytic polycondensation reaction solution to obtain coating solution of the surface layer, coating the substrate coated with the transition layer by the coating solution of the surface layer, and then placing the substrate at a temperature of between 180 and 250 DEG C to obtain the nano-composite coating with low surface energy. The coating has the characteristics of low surface energy, high density, adjustable hardness, good flexibility and strong adhesion force.

Description

technical field [0001] The invention relates to a nanocomposite coating and a preparation method thereof, in particular to a nanocomposite coating with low surface energy and a preparation method thereof. Background technique [0002] With the development of science and technology, materials with a single property can no longer meet people's needs, and compounding has become the trend of modern material development. Composite materials with excellent performance can be prepared through functional compounding, performance complementation and optimization of two or more materials. Because the organic phase and the inorganic phase are connected by chemical bonds, the organic / inorganic composite material has the comprehensive properties of both organic materials and inorganic materials. Among them, the inorganic phase endows the material with high strength, high modulus, high scratch resistance, and corrosion resistance; the organic phase endows the material with low density, g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/00C09D5/00C09D183/00B05D3/00B05D1/38
Inventor 胡坤李勇郑康陈林林永兴田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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